Ikon fork springs

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  • Nev
    • Feb 2026

    #1

    Ikon fork springs

    Hey men, I spoke with someone at ikon Suspension today about fork springs for my 1981 550 and she could only find a listing for 1983 onwards. Will these fit my bike?
    Last edited by Guest; 01-09-2018, 04:59 AM.
  • Guest

    #2
    Go to Alphasports.com parts diagrams and check the part numbers for both . Might give you some info .
    I bought shocks for my GS1000S and was real happy . They seem to be very knowledgeable .

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    • Steve
      GS Whisperer
      • Jun 2005
      • 35925
      • southwest oHIo

      #3
      I had forgotten that Ikon also had fork springs. I took a look at their webpage and saw that they are progressively-wound. Do you have anything available that is straight-rate? If not, it might be worth the difference in price to get some Sonic springs and have them shipped. Many of us have Sonic springs and prefer them over Progressive (brand) springs, manily because of the single spring rate. The owner of the company is a member here (Rich Desmond), but unfortunately, we don't get get a discount.

      Back to your bike: if you can't find anything for your 550, look at listings for a 650. Same general size and weight of bike, so should work.

      .
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      • RichDesmond
        Forum Sage
        Past Site Supporter
        • Jul 2011
        • 2757
        • NoVa

        #4
        Originally posted by Nev
        Hey men, I spoke with someone at ikon Suspension today about fork springs for my 1981 550 and she could only find a listing for 1983 onwards. Will these fit my bike?
        Find out from them what's the OD of the '83 550 springs. If it's 24 or 25mm you can use them, if it's 26mm or bigger you can't
        '20 Ducati Multistrada 1260S, '93 Ducati 750SS, '01 SV650S, '07 DL650, '01 DR-Z400S, '80 GS1000S, '85 RZ350

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        • Nev

          #5
          Thanks, I?ll give them another call today.
          So what are the pros and cons of straight rate vs progressive rate springs?

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          • glib
            Forum Sage
            Past Site Supporter
            • Jul 2014
            • 1175
            • Stockton, CA

            #6
            Originally posted by Nev
            Thanks, I?ll give them another call today.
            So what are the pros and cons of straight rate vs progressive rate springs?
            Straight-Rate Springs vs. Progressive Rate Springs
            sigpic
            1983 GS1100ES (Bought July 2014)
            1983 GS1100E (Bought July 2014)
            1985 GS700ES (Bought June 2015) Sold
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            • Nev

              #7
              What rate springs would you recommend rich?
              I weigh 80kg standard street/road riding

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              • RichDesmond
                Forum Sage
                Past Site Supporter
                • Jul 2011
                • 2757
                • NoVa

                #8
                Originally posted by Nev
                What rate springs would you recommend rich?
                I weigh 80kg standard street/road riding
                The 0.90s will be the best rate for you.
                '20 Ducati Multistrada 1260S, '93 Ducati 750SS, '01 SV650S, '07 DL650, '01 DR-Z400S, '80 GS1000S, '85 RZ350

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